Nut retainer



Aug. 10, 1943. J. P. BURKE NUT RETAINER Filed Nov. 23, 1938 2Sheets-Sheet 1 INVENTOR.

ATTORNEY.

Aug. 10, 1943. P, BURKE 2,326,285

NUT RETAINER Filed Nov. 25, 1938 2 Sheets-Sheet 2 Imlldillllll 22g 5. IF599.

INVENTOR.

ATTORNEY.

' and having-openingsthrough each leg or branch thetubular extension'The nutis free tozrotate v Patented Au 10.1943- o o ri s o I Jan es P.Burke; Knoxvilla-"Ten'n; assignorlto F McLaughlin D troig w 1 piihcatoz'ii noteihh i; 23,1938," SerialfNo. 242,975

V V ili. '1'Claim.- (o1. 151: -25') I I I v Thisinvention relates todckwashersiandhas Fig-10's a ms-s alant the inodifi, ld lfj for itsobject to provide a' device oir this type vice;capableoractingthroughalsubstantial distance F ig. 11'is a sectionillustrating ,to maintain a hut'm; pressure engagement withficationyand: a the threadsof abolt i f' i 5 Fig; 12 is aasectioniillustrating the'in .Another object is' toi'provide a.l'o'clgn'ashel for inc njunction'with a U-loolt. 1 placement betweena'nutjanda'suriaoe ofigreater ;The' present; device 'co'mp'r'isespa'i stralike area than the surfacej of the'nutgadjacent there' 3 I blankoispringkmetaljibent to provide jtwo sub t whi h wi l be t i ie impo t ip t n al paralleL -armS: lirand 2;.1the tWOjflIHl-S bending stressesithereinan'd'which'fwill serve being integrally united byanarcuatelybentpo thedua'l function of maintain ngljpres'sure,be; tionLSJg'I'he reeendgl ofithe arm .2 isgbent sub-j tween the nut andthe threads ofaTholtjandof stantifallyg perpendicular ,to- ,theigfmain portion...

constituting a frictional 1ockf1againstfrotation:j thereof;andcontactstheftop surface-of'the arm l.'-f' of the nut with respect to itsbolt by snap action The two arms I and -2 have aligned openings} againstthe corners thereof. 1 I l5 5 and 6 therein, and a'nut I has atubular1ex- A further object isqtofprovide a lock washer,..tension.fiiextending through the, opening}: and composed of spring.inaterial bent upon itself retained therein byfthe turnedlover portion910i thereof to receive a bolt the'legs' or'branches relative to the arm2. p r; I; v being collapsible against each other under pres- The nut lis screwed. onto a bo t l0 xtend sure from a nut to disalign theopenings and to t rou t e mbe s w ch re tic-be secured v set up africtional locking pressure with the together, and as the nutis'tightenedthearm 2:; threads of the bolt; is deformed substantially asshown in Fig. 3. (Due Another object is to provide alock washer of i todeformation of thebent portions} and 4 a; such size as to extendsubstantially outwardly constant pressureis exerted inadirection tobind" I of the contour of the nut and which has-its ends t embe 's t yogether, and'in case of -l bent awayirom the n'ut so that a locking'andshrinkage or contraction ojf the members H the slack take-up action willresult from the bending "Sp ng ct onm ntains t em in Pressure 60n-'thereof when pressure is imposed thereon-by its tact. As illustra the-aalso b m ef' nut. This. washer has particular utility, for use 3 rme a de s a ut-t mp i y ha with'materials, such as wood. which are expected ICorners of the nu e y d lt 'hi 'de-I a to shrink while aging. v i '7 fgee fof frictionbtweenthe.nut'and thefa'r m l With the above and otherends in view thein- Y which opposes 9Se ing or accidental 'removavention is more fully disclosed hereinafter with of the nut. a a f Ireference to the accompanying drawings, in The arm I .is provided withperpendicula which: fprongs l2 struck therefrom. Incasethe'mem. Fi 1 i aplan view; 1 bars to be secured together areof metal the Fig. 2 is aside elevation illustrating the 'asp gs are spaced whereby theyengagethe sides sembly' prior to tightening of the nut; V I of the adjacentmember, as illustrated at I'Z a; in g r Fig. 3 is an elevationillustrating the {nut n Fig.5. if the members to be secured'are of wood,1 tightened; v v 1 for oi, soft.material'similar to wood,.the prongs- IFig. 4 isa section of the device; r m y beimbedde g the-materialasillustratedatg" Fi .5 is a fragmental transverse section i11us-. b lig.6.' f 1 I I."-

- 1 trating one method of"asse'mb1y of the device f f to figs"?mQmSWeJh-e. P P- the members t be 5 device is composed of astrap-likblanl: of spring Figpfi isa fragmental transverse section illus- I gig;jf figggfgff fi ggggfi J tratlng anothe method o f assembly of the deviceA third arm q a mg eafinz fim themembers with the arm 2! by anflintegralarc'uate portion la o m i d v c 14; the two' arms '2ll land '23 beingfreeto' sli'de V Fig. 8 isa side'elevation illustrating the modirelativeto each other.l-.-." l fied device prior to tightening of the nut; A nut25 has a tubularaextensionili receive Fig. 9 is aside elevation,partlyjincross sec-f in an aperture 121 in th arm 21, and'fretaine tion,illustrating the device after tightening of therein by an over-turnedportion 28onthe tubu. the nut; V s 1 -"larportion, ln linewith theaxisofthe nut 2 5" creates friction 1; As shown in H L .cei respontfingtogtheapertures fliandiw; may e: 7 provided with screw threads: ofapitohwsitoztliretipitclr' ofthe threads' m-the-rruti diameterlarger-than the screwthreaded opening the portionszz an'd 24 sets uppressure conditions biasing outward movement OrseparatiQn of the I [armszfl'and 23 withthe result that the walls e12;

the'apertures 29 andj3fl are moved into pressuref j contact withopposite sides of thebolt 31; This pressure contact creates friction.which, opposes removal of the nut, and the resilient ra sslmeedee'gveloped by deformation of the spring metal,,;in Y addition tomaintaining the members 3fi'n pressure contact in the presence ofcontractien alsog tending to prevent removal of thwrmti f 1' a f ,Fig.ll, apertures 29a. and a m,

rte

belt-gatewspring f meter. hearing its-"ends revefrsel y -benti to varmsaaage erturesi4: areiprovided-inthe l 'strirrlifl and -theiarms mthrough which the, it Lil-bolt ends extend; and i the arms arenormal lyare apertures 29 and 30 in the arms 20 and 23 p respectively. Theapertures Hand 30 are of a s tightening of the nuts.

- In this latter form the nuts may be attached o that they beunsecuredlin order that one nut may be removed without removal of theother.

Although specificenrbodlments Qfjl'l'e invention 'havebeen illustratedand described, it will be understoodthatvarious changes maybe made within the scope of the appended claim without'de- V 1 par.t ing from thespirit of, the invention,.and such changes are contemplated.

gwhata istdaimedtisr; 5' f :Arlocl'awasher formedof spr ng fmetal'havingjuxtaposed firstand second arms insurfacecontact 'one with'the' other; athird arm spaced from i'the first two armsgand; substantially parallel,

. tines there'in; integralrounde d 'portions.connecttherewith, all threearmshaving aligned apermanner 'thafidi'stdrtionf thereof" caused b oom:

r're i n, of the' i a m F w h t l j arms? createsgforces tending'tofcauseputwa'rd ;inglnutsflltontthe screwthreadeendsfthereoifa Betweenthe nuts 4 l and- '92- pres re imp ih b'yto' causethez' walls bff thapertures ItoQ bind against, opposite sides ofifa 'bolt disposedfinisaids ape u es; and; a l jut" rbt tb a d e' it h apertureinthethird ar"spaced-from the, strip in'order that distortion through a substantialdistance takes place upon

